2. Objectives Overview
Explain why computer
literacy is vital to
success in today’s world
Define the term,
computer, and describe
the relationship
between data and
information
Describe the five
components of a
computer
Discuss the advantages
and disadvantages that
users experience when
working with
computers
Define the term,
network, and identify
benefits of sharing
resources on a network
Discuss the uses of the
Internet and World
Wide Web
See Page 3
for Detailed Objectives
Discovering Computers : Chapter 1
2
3. A World of Computers
• Computers are everywhere
Pages 4 - 5
Figure 1-1
Discovering Computers : Chapter 1
3
4. What Is a Computer?
• A computer is an electronic device, operating
under the control of instructions stored in its own
memory
Collects
data
(input)
Processing
Produces
information
(output)
Information Processing Cycle
Page 6
Discovering Computers : Chapter 1
4
5. What Is a Computer?
Page 6
Figure 1-2
Discovering Computers : Chapter 1
5
6. The Components of a Computer
• A computer contains many electric, electronic, and
mechanical components known as hardware
Input Device
Output Device
• Allows you to enter data and instructions into a computer
• Hardware component that conveys information to one or more people
System Unit
• Case that contains the electronic components of the computer that
are used to process data
Storage Device
• Records (writes) and/or retrieves (reads) items to and from storage
media
Communications
Device
• Enables a computer to send and receive data, instructions, and
information to and from one or more computers or mobile devices
Pages 6 - 8
Discovering Computers : Chapter 1
6
7. The Components of a Computer
Page 7
Figure 1-3
Discovering Computers : Chapter 1
7
